<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>图书添加</title>
  <style type="text/css">
    .grid {
      margin: auto;
      width: 500px;
      text-align: center;
    }

    .grid table {
      width: 100%;
      border-collapse: collapse;
    }

    .grid th,
    td {
      padding: 10;
      border: 1px dashed orange;
      height: 35px;
      line-height: 35px;
    }

    .grid th {
      background-color: orange;
    }

    .grid .book {
      padding-bottom: 10px;
      padding-top: 5px;
      background-color: #F3DCAB;
    }
  </style>
</head>

<body>
  <div id="app">
    <div class="grid">
      <div>
        <h1>图书管理</h1>
        <div class="book">
          <div>
            <label for="id">
              编号：
            </label>
            <input type="text" id="id" v-model='id' :disabled="flag" />
            <label for="name">
              名称：
            </label>
            <input type="text" id="name" v-model='name' />
            <button @click='handle'>提交</button>
          </div>
        </div>
      </div>
      <table>
        <thead>
          <tr>
            <th>编号</th>
            <th>名称</th>
            <th>时间</th>
            <th>操作</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for='item in books' :key='item.id'>
            <td>{{item.id}}</td>
            <td>{{item.name}}</td>
            <td>{{item.date}}</td>
            <td>
              <a href="" @click.prevent='editBook(item.id)'>修改</a>
              <span>|</span>
              <a href="" @click.prevent>删除</a>
            </td>
          </tr>
        </tbody>
      </table>
    </div>
  </div>
  <script type="text/javascript" src="js/vue.js"></script>
  <script type="text/javascript">

    var vm = new Vue({
      el: '#app',
      data: {
        flag: false,
        id: '', // 图书编号
        name: '',  // 图书名称
        books: [{
          id: 1,
          name: '三国演义',
          date: ''
        }, {
          id: 2,
          name: '水浒传',
          date: ''
        }, {
          id: 3,
          name: '红楼梦',
          date: ''
        }, {
          id: 4,
          name: '西游记',
          date: ''
        }]
      },
      methods: {
        // 添加图书功能
        handle() {
          if (this.flag) {
            // 编辑图书
            this.books.some(item => {
              if (item.id === this.id) {
                return item.name = this.name

              }
            })
            this.flag = false
          }
          else {
            // 添加图书信息
            let book = {
              id: this.id,
              name: this.name,
              date: ''
            }
            // 更新视图
            this.books.push(book)
          }
          //  重置输入框
          this.name = this.id = ''
        },

        // 修改图书功能
        editBook(id) {
          this.flag = true
          const book = this.books.filter((item) => {
            return item.id === id
          })
          this.id = book[0].id
          this.name = book[0].name
          // console.log(book)
        }
      }
    });
  </script>
</body>

</html>